One aspect that really troubles me is that of the Seal laying a lazer track to the mortar that was firing on them.

One doesn't just randomly signal this information because, of course, it reveals your own location.

He had to be relaying it TO somebody/something.

I firmly believe the Seal had reason to know or think there was an armed drome or gunship close enough to respond.

Otherwise, his use of the lazer makes no sense.

He knew it was there. And yet it did not respond.